If, despite being born in Mexico, in Panama, in Brazil, in Argentina, etc., you're told that you're not #American, then you're suffering #racism. All Mastodon servers and other fediverse services have rules against racism, so don't hesitate to report anyone who says that you're not American, because you're as American as Usonians themselves.
Do you imagine an scenario where people from Germany are Europeans, while people from Spain, France, Italy, etc. are not? Or people from Kenya are Africans, while people from Morocco, Namibia, Ghana, etc. are not? Well, that's what happens with people from United States and with people from the rest countries of America #racism